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Multiple potential security vulnerabilities in Intel® firmware (UEFI) may allow for escalation of privilege, information disclosure or denial of service. The detailed description of the vulnerabilities with high CVSS base scores is as follows:

According to the information provided the potential impact of INTEL-SA-00191 is:

Denial of Service, Information Disclosure, Privilege Escalation

Intel® Processor Microcode (MCU) Updates

Multiple potential functional issues in Intel® processor microcode (MCU) may cause unpredictable system behavior, lead to a system hang or could result in a platform reset. The detailed description of the issues (no CVEs and no CVSS base scores – FUNCTIONAL issue) is as follows:

"TSX" - In a synthetic software environment, certain Intel Transactional Synchronization Extensions (TSX) functions may interact in ways that could result in unpredictable system behavior. This would only occur in extremely rare circumstances. Intel is not aware of any commercially available software exhibiting this behavior, and this is issue is not security-related. Intel is releasing a microcode(MCU) based workaround to prevent such hypothetical behavior.

Broadwell EP, EP4S, DE (V1-3, Y0); Haswell EX

"RCOMP" - An RCOMP and package C6 exit can lead to a system hang that results in machine check bank 4 status register bits 31:24 with a value of 0x09, 0x71, or 0x73. It is possible for BIOS to contain a workaround for this erratum.

Affection and Remediation

Affected Fujitsu Products

A number of Fujitsu products are affected by these vulnerabilities. Fujitsu is working to distribute patches for all affected products that are currently supported. Older systems that are no longer supported will not be patched.

An overview of the affected Client Computing Devices (e.g. CELSIUS, ESPRIMO, FUTRO, LIFEBOOK, STYLISTIC) and Server products (PRIMERGY and PRIMEQUEST) can be found here:

After downloading the .zip file, containing the ME Firmware Update Pack, extract all files/directories/subdirectories in the Firmware.ME directory (\Firmware.ME) of the .zip file to the desired directory on the hard drive.

Step 4: ME Update Procedure.

The "Firmware.ME" directory contains the ME update files which can be used in Windows environment. Run "update.bat" in Windows cmd environment with administrative privileges to start the ME flash procedure. Please choose 32-bit or 64-bit directory if using a Windows 32-bit or a Windows 64-bit installation.

Hints:

To run the ME Update procedure using a Windows installation, it is necessary to have the Windows "HECI" driver installed. Please use the Intel(R) Active Management Technology Driver package for Windows.

To run the ME Update procedure using a Windows PE installation, it is necessary to have the Windows "HECI" driver installed. This can be done at runtime by "drvload.exe< Path to HECI.INF>\HECI.INF". The "HECI" driver can be extracted from the Intel(R) Active Management Technology Driver package for Windows.

Further Information

Fujitsu does not manufacture the affected microprocessors, that Fujitsu buys from third party suppliers and integrates into its products. Therefore, this communication is based on the information and recommendations Fujitsu has received from the third party suppliers of the affected microprocessors.

Fujitsu does not warrant that this communication is applicable or complete for all customers and all situations. Fujitsu recommends that customers determine the applicability of this communication to their individual situation and take appropriate measures. Fujitsu is not liable for any damages or other negative effects, resulting from customers’ use of this communication. All details of this communication are provided "as is" without any warranty or guarantee. Fujitsu reserves the right to change or update this communication at any time.

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